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March 15, 2012 5:00 AM

Alan Bavley | Angioplasty dispute balloons

By some estimates, about $6 billion to $8 billion could be saved each year if just a third of the patients with stable heart disease who undergo angioplasty were put on a careful regimen of diet, exercise and medications instead. But which patients should be getting this medical therapy, and which should still have the invasive procedure?

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